<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<?php
/**
 * Created by PhpStorm.
 * User: fang
 * Date: 2016/8/30
 * Time: 13:35
 *参数说明:
 *$max_file_size  : 上传文件大小限制, 单位BYTE
 *$destination_folder : 上传文件路径
 *$watermark   : 是否附加水印(1为加水印,其他为不加水印);
**/

//上传文件类型列表
$uptypes=array(
    'image/jpg',
    'image/jpeg',
    'image/png',
    'image/pjpeg',
    'image/gif',
    'image/bmp',
    'image/x-png'
);

$max_file_size=2000000;     //上传文件大小限制, 单位BYTE
$destination_folder="../static/theme2/app/"; //上传文件路径
$watermark=0;      //是否附加水印(1为加水印,其他为不加水印);
$watertype=1;      //水印类型(1为文字,2为图片)
$waterposition=1;     //水印位置(1为左下角,2为右下角,3为左上角,4为右上角,5为居中);
$waterstring="fang";  //水印字符串
$waterimg="";    //水印图片
$imgpreview=1;      //是否生成预览图(1为生成,其他为不生成);
$imgpreviewsize=1/2;    //缩略图比例
?>
<html>
        <title>tup图片上传<title>
<body>
        <form enctype="multipart/form-data" method="post" name="upform" action="invite3.php">
            <label>推广图片</label>
            <input name="upfile" type="file"><br>
            <?php
            if ($_SERVER['REQUEST_METHOD'] == 'POST')
            {
                if (!is_uploaded_file($_FILES["upfile"]["tmp_name"]))
                    //是否存在文件
                {
                    echo "图片不存在!";
                    exit;
                }

                $file = $_FILES["upfile"];
                if($max_file_size < $file["size"])
                    //检查文件大小
                {
                    echo "文件太大!";
                    exit;
                }

                if(!in_array($file["type"], $uptypes))
                    //检查文件类型
                {
                    echo "文件类型不符!".$file["type"];
                    exit;
                }

                if(!file_exists($destination_folder))
                {
                    mkdir($destination_folder);
                }
                $filename=$file["tmp_name"];
                $image_size = getimagesize($filename);
                $pinfo=pathinfo($file["name"]);
                $ftype=$pinfo['extension'];
                $destination = $destination_folder.$file["name"];
                /*if (file_exists($destination) && $overwrite != true)
                {
                    echo "同名文件已经存在了";
                    exit;
                }*/
                if(!move_uploaded_file ($filename, $destination))
                {
                    echo "移动文件出错";
                    exit;
                }

                $pinfo=pathinfo($destination);
                $fname=$pinfo['basename'];
                echo " <font color=red>已经成功上传</font><br>文件名:  <font color=blue>".$destination_folder.$fname."</font><br>";
                echo " 宽度:".$image_size[0];
                echo " 长度:".$image_size[1];
                echo "<br> 大小:".$file["size"]." bytes";

                if($watermark==1)
                {
                    $iinfo=getimagesize($destination,$iinfo);
                    $nimage=imagecreatetruecolor($image_size[0],$image_size[1]);
                    $white=imagecolorallocate($nimage,255,255,255);
                    $black=imagecolorallocate($nimage,0,0,0);
                    $red=imagecolorallocate($nimage,255,0,0);
                    imagefill($nimage,0,0,$white);
                    switch ($iinfo[2])
                    {
                        case 1:
                            $simage =imagecreatefromgif($destination);
                            break;
                        case 2:
                            $simage =imagecreatefromjpeg($destination);
                            break;
                        case 3:
                            $simage =imagecreatefrompng($destination);
                            break;
                        case 6:
                            $simage =imagecreatefromwbmp($destination);
                            break;
                        default:
                            die("不支持的文件类型");
                            exit;
                    }

                    imagecopy($nimage,$simage,0,0,0,0,$image_size[0],$image_size[1]);
                    imagefilledrectangle($nimage,1,$image_size[1]-15,80,$image_size[1],$white);

                    switch($watertype)
                    {
                        case 1:   //加水印字符串
                            imagestring($nimage,2,3,$image_size[1]-15,$waterstring,$black);
                            break;
                        case 2:   //加水印图片
                            $simage1 =imagecreatefromgif("xplore.gif");
                            imagecopy($nimage,$simage1,0,0,0,0,85,15);
                            imagedestroy($simage1);
                            break;
                    }

                    switch ($iinfo[2])
                    {
                        case 1:
                            //imagegif($nimage, $destination);
                            imagejpeg($nimage, $destination);
                            break;
                        case 2:
                            imagejpeg($nimage, $destination);
                            break;
                        case 3:
                            imagepng($nimage, $destination);
                            break;
                        case 6:
                            imagewbmp($nimage, $destination);
                            //imagejpeg($nimage, $destination);
                            break;
                    }
                    //覆盖原上传文件
                    imagedestroy($nimage);
                    imagedestroy($simage);
                }
                if($imgpreview == 1)
                {
                    echo "<br>图片预览:<br>";
                    echo "<img src=\"".$destination."\" width=".($image_size[0]*$imgpreviewsize)." height=".($image_size[1]*$imgpreviewsize);
                    echo " alt=\"图片预览:\r文件名:".$destination."\r上传时间:\">";
                }
            }
            ?>
            <br> <input type="submit" value="上传">
        </form>

    </div>
</div>
<script src="lib/bootstrap/js/bootstrap.js"></script>
</body>
</html>